Answer:
Step-by-step explanation:
(x1,y1)=(2,5)
(x2,y2)=(6,0)
using formula
slope=y2-y1/x2-x1
=0-5/6-2
=-5/4
therefore slope=-5/4
ANSWER:
She should use 30 ounces of water and 180 ounces of 35% salt.
SOLUTION:
First, let us set up a table and fill in the unknowns with variables x and y.
component Unit Value Amount( ounces) value
0% salt 0.0 x 0.0x=0
35% salt 0.35 y 0.35y
Total Mixture 0.3 210 0.3×210=63
From this, we can easily set up the two equations.
Sum of values of two salts = Value of mixture
0x+0.35y = 63 ................(1)
0.35y = 63
y = 180
Now,
Sum of amounts of each salt = Amount of mixture
x + y = 210 ---------> (2)
so, put y = 180 in (2)
x + 180 = 210
x = 210 – 180
x = 30
Hence, she should mix 30 ounces of water and 180 ounces of 35% salt.
Step-by-step explanation:
1- 6(x+8)=5x+4. First calculate the brackets.
2- 6x+48=5x+4 (multiply the number in front of the brackets with the numbers in the brackets) so 6×X= 6x and 6×8= 48
3- 6x-5x= -48+4 put the numbers with x on the left hand side and the others on the right hand side. (when moving from side to the other side you convert + into - or reversed)
4- x= -44 now work out the sums and then you get x